Small tree; branches erect, puberulent; leaves 15-40 cm long, eglandular; leaflets 16-20 pairs, elliptic-oblong, obtuse, slightly mucronate, densely pubescent beneath; stipules broadly elliptic, falcate or reniform; flowers in short or long, panicles of corymbose racemes; bracts ovate-oblong; flowers large, about 3 cm across, pink fading to white; sepals-5, red, ovate, imbricate, hairy; petals imbricate, pale pink to dark red, subequal; stamens 10, 7 fertile and 3 sterile, fertile-3 with large rounded swelling on the middle of longer filaments, anthers dehiscing by terminal pores; ovary oblong, pubescent, style slender, curved; pods 20-60 x 1.5 cm, pendulous, dark brown, terete, glabrous, indehiscent; seeds many.